Improved roofing compound



T 0 allxwhom" it may concern.-

FRANK o. T'EG T HOFF, or CLEVELAND, OHIO.

Letters Patenflio. 100,688, dated March 8, 1870.

mrnovnn apor-me comrotmn.

The Schadulerefened' to In these Letters Patent and maklng'part of the same I, FRANK O. TEGETTHOFF, of Olevelandfcounty of Onyahoga, and State of Ohio, have invented a certain Gompound for Roofing Purposes, of which the following is a specification.

lhe natureof my invention consistsin mixing the following-named ingredients in about the proportion stated, thus making a composition for roofing that is not liable to crack, and that is sntfioiently elastic to allow, of the expansion and contraction.

-To prepare this composition, I first take one bushel of water-lime and add to it two pounds pulverized resin,

mixing them well together. 1 then add this to seven bushels clear, sharp sand,'thorou'ghly working them together, and-then add half a bushel of aii slaked lime, still stirring all well together.

Next I take coal-tar and add to it in the proportion of two gallons of linseed oil to forty of tar, and having the tar hot, I add a sufiicient quantity of it to the aforesaid mixture of sand, limes, and resin to give it the consistency of mortar.

'lhis composition is applied while hot to a roof covered with a sheathing of felt, laid in the ordinary manner.

I claim the preparation of the roofing compound herein described, of the ingredients in the proportions and for the purpose set forth.

FRANK o. TEGETTHOFF.

Witnesses:

Geo. W. Tmm'rrs,

O. W. QUIRK. 

